Hydrilla in Lake Okeechobee, Florida

Hydrilla in Lake Okeechobee, Florida, U.S.A., a main historic source of water to the Everglades. The word ‘Okeechobee’ comes from the word for ‘big water’ in the Seminole language. Photo from old ASLO slide collection; taken by M. Brenner; scanned by K.L. Schulz.